baber/WOPTO huggingface dataset:
Patent GB-937438-A (GB)
Title: Method of applying contacts to a semiconductor body
IPC: H01L23/485
Filed: 1960-03-14
Abstract: 937,438. Semi-conductor devices; ohmic resistors. PACIFIC SEMICONDUCTORS Inc. March 14, 1960 [April 21, 1959], No. 8961/60. Class 37. Closely spaced electrodes are provided on a semi-conductor body by alloying a contact structure to a surface of the body, providing a layer of insulating material upon the contact structure, and applying a layer of conductive material over the insulating layer and upon the said surface. The invention is applicable to transistors, diodes, thermistors, resistors, photocells &c., having semi-conductor bodies of Si, Ge, Si-Ge alloys, and intermetallic compounds such as GaAs, InP. The transistor shown in Fig. 7 comprises a Si wafer having a P-type base region 12 and emitter and collector regions 11, 13 formed by the-diffusion of donor impurities into all surfaces of the wafer, the edges of which are then removed by dicing, lapping &c. A stencil of Ni, Mo, Ta, graphite &c., is placed on the emitter region 11 and an Al electrode 21 in digitated form (see also Fig. 3) is vapourdeposited in vacuo at about 800‹ C.; alternatively, the temperature of the wafer is not raised. The electrode 21, which penetrates the emitter region 11 and contacts the base region 12, is cooled at about 0.2‹ C./sec., after which an insulating layer 31 of Al 2 O 3  is formed by anodization upon its surface above the emitter region. Next, a layer 32 of Ag, Au, Ni, Cu &c. is applied to the whole of the emitter surface, including the insulated parts of electrode 21, by evaporation, to form the emitter electrode of the device. Leads 53, 54 are connected by thermo-compression, soldering &c. to collector region 13 and emitter electrode 32 respectively, and a base lead 55 is connected to a small exposed portion of base electrode 21. Fig. 8 shows a resistor 33 of P-type material, to which is alloyed an ohmic electrode 34 which is subsequently covered with an insulating layer 35, after which a second electrode 36 is applied in the form of a conductive layer. Modifications.-Base electrode 21, Fig. 7, may be formed by spraying molten metal through the stencil or by alloying a pre-formed blank on to the body; it may be of various configurations, e.g. a bar with digits extending from each side, and may be made of.metal other than Al, e.g. Sn, Bi, doped if necessary with acceptor impurity such as Ga, In, Al, B. A PNP transistor may be made, in which case base electrode 21 is doped with donor impurity such as P, As, Sb, Bi. A plurality of discrete contacts may replace electrode 21. The insulating layer 31 may comprise insulating material applied through a mask, by painting or otherwise. Conductive layer 32 may be applied by electroless plating, chemical reduction &c.
Patent GB-546323-A (GB)
Title: Frequency-modulation television signal receiver
IPC: H04N7/045
Filed: 1941-07-16
Abstract: 546,323. Television receivers; frequency modulation. HAZELTINE CORPORATION. July 16, 1941, No. 8979. Convention date, Aug. 2, 1940. [Classes 40 (iii) and 40 (v)] In a receiver of television signals frequencymodulated on a carrierwave, a detector device is used adapted to possess the frequency characteristics shown in Fig. 2 and means is provided to adjust the zero of the curve to the frequency corresponding to " black." This reduces interferences of spurious signals with synchronizing and stabilizing circuits and minimizes accidental white spots in the dark portions of the picture As shown in Fig. 1, the detector 16 comprises two diodes 28, 29 with load resistances 31, 32 and byepass condensers 33, 34 in series supplied with the signal through a transformer 25, 26. The secondary 26 is tuned by a condenser 27 to the mean frequency of the signal, the primary 25 is coupled by a condenser 30 to a tapping 38 on the secondary, and this tapping is connected to the junctions of the resistances 31, 32 and condensers 33, 34. This arrangement feeds sum and difference of primary and secondary voltages to the diodes in such a way that when the tapping is at the centre of the secondary, the characteristic is curve A of Fig. 2. By adjusting the tapping along the secondary, curve B is obtained such that the zero point f 3  corresponds to the frequency representing " black." In a modification, Fig. 3, the secondary of the coupling transformer comprises two separate sections 40, 41 tuned respectively above and below the frequency band and both coupled by mutual inductance to primary 25. The zero point of the characteristic curve is adjusted by varying the coupling between primary 25 and one section of the secondary. Instead of adjusting the coupling transformer to determine the frequency at which the characteristic curve crosses the zero line, the oscillator-modulator 13, Fig. 1, and the intermediate-frequency selectors may be adjusted to produce the frequency corresponding to "black" at the zero of the curve. The circuit may include stabilizing means including a detector-coupled to a sharplytuned circuit resonant in the immediate vicinity of the intermediate frequency corresponding to the tips of the synchronizing signals and utilizing the output of this detector to control the frequency of the oscillator section in a manner analogous to automatic frequency control of conventional amplitude-modulation receivers.
Patent GB-427362-A (GB)
Title: Packings for the spindles of rotary pumps
IPC: F16J15/20
Filed: 1934-03-22
Abstract: 427,362. Packings for rotary spindles. M.G. CAR CO., Ltd., and ENEVER, A. S., Abingdon-on-Thames. March 22, 1934, No. 8983. [Class 122 (v)] An annular packing for the spindle of a rotary pump is formed of a material which includes cork and is held compressed between a pair of radial flanges fixed on the spindle and a pair of stationary inwardly extending flanges. The main driving spindle 13 of a pump is provided with an integral flange 12 and adjustable flanges 16 and the end casing 15 of the pump is provided with a flange member 14 and adjustable flanges 17. Between these two sets of rotary and stationary flanges are disposed washers 20 formed of fabric incorporating cork alternating with metal shims 21. In an alternative form the two outer sets of flanges are held in position by the ball races of the ball bearing.
Patent GB-378826-A (GB)
Title: Improvements in or relating to synchronizing devices with a controlled oscillation generator, especially for television apparatus
IPC: H04N5/12
Filed: 1932-03-30
Abstract: 378,826. Television. FERNSEH AKT.-GES., Goerzallee, Zehlendorf, Berlin. March 30, 1932, No. 9165. Convention date, April 4, 1931. Addition to 366,598. [Classes 40 (iii) and 40 (v).] In a synchronizing system using an oscillating valve 7 controlled by incoming signals, as described in the parent Specification, particularly for use in television, the controlled source of light 2, the output valves 3 of the television receiver, and the synchronizing circuit 6, 7, 8 are fed from a common mains supply unit. A rejector circuit 1 in the anode lead prevents reaction between the circuit of the light source and the synchronizing circuit through the mains supply unit.
Patent GB-207776-A (GB)
Title: Washable dyed silk piece goods and processes of dyeing same
IPC: D06P3/04
Filed: 1923-04-03
Abstract: Silk is dyed in the piece, either alone or in mixed goods such as with cotton, so as to be fast to warm soapy water but not fast to hot soapy liquor, by treating in a continuously boiling aqueous soapy liquor containing sodium phosphate and subsequently adding a dyestuff to the boiling liquor.  An example shows the treatment of the piece goods in a boiling liquor containing disodium hydrogen phosphate, Turkey-red oil and soap, to which there are subsequently added Glauber's salt and a substantive, basic, vat or sulphur dye.  The vat and sulphur dyes are added in the form of a solution in caustic alkali and hydrosulphite and in sodium sulphide respectively.  A second example shows the dyeing of the goods in a boiling bath with a diazotizable dye such as primuline, diazotization and development with b -naphthol and finally a treatment for shading purposes as in the first example, using basic or substantive dyes.  The following examples of suitable dyestuffs are given:-basic dyes-Brilliant Green. Victoria Blue, Rhodamine (red), Thioflavine T, Methyl violet 6 B and 5 R; substantive dyes-Pontamine green BBX (Diamine green B or Dianil green B), Diazoline dark brown (a mixture of Diamine brown 3G and Diamine black HW), Accordine seal brown (a mixture of Oxydiamine orange R, Diamine brown M and Diamine black HW); vat dyes-Algole blue 3 G, Helindone red and violet; sulphur dyes-Sulphur yellow, blue and brown.  In addition many examples are given of colours which may be produced by the process.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the following three processes. The goods are treated in a bath of boiled-off liquor broken with sulphuric or acetic acid, and a basic, substantive or acid dyestuff added. When the required shade is attained tannic acid is added to the bath and finally the goods are washed and treated with tartar emetic.  The goods are dyed in a bath of boiled-off liquor or boiling water, acetic acid and a substantive dye, and treated successively in separate baths of tannic acid and tartar emetic. A diazotization follows and a development with sodium carbonate. The third process for producing a black consists in dyeing in a boiling bath of fustic and haematin, adding "black iron" and "blue stone" and acetic acid, working in a second bath of haematin and soap and finally in successive baths of tannic acid and tartar emetic.  In all processes the goods are finally cleansed in a boiling soap bath, washed and acidulated.  As acid dyes in the first of the above additional processes Fast red, Milling yellow, Formyl violet and blue, and Nigrosine may be employed.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1505845-A (GB)
Title: Tensioning frames for textile working surfaces
IPC: A47C27/00
Filed: 1975-03-06
Abstract: 1505845 Embroidery frames I SLIVAR 6 March 1975 [8 March 1974] 9252/75 Heading D1G In an embroidery frame the fabric is tensioned by assemblies 8, 9 each comprising a piece of wood with a metal ring and a projecting pin at each end on which pin a respective channel-section member 12, 13 of the frame is secured by a nut 22-25. The frame is adjustably and rotatably mounted on an adjustable stand 16-19 and a different fabric width is accommodated by turning the frame through 90‹ and supporting it on the stand by pins 30, 31.
Patent GB-308362-A (GB)
Title: Improvements in extraction of pearl essence from fish scales
IPC: C09D5/36
Filed: 1929-03-22
Abstract: 308,362. British Celanese, Ltd., (Assignees of Miles, G. W.). March 22, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Pigments. - Pearl essence is extracted fromfish scales by treating them with a liquid containing an enzyme. Preferably a proteolyticenzyme such as pepsin or pancreatin in the presence of an activator such as acid or alkali, is used. In an example, 10 lbs. of herring scale is agitated with 10 gallons of water containing 30 grams of pepsin and 0.3-5 per cent of hydrochloric acid. The fish scale is separated from the detached pearl essence by sieving, and the suspension of pearl essence allowed to settle. It is then washed by decantation, preferably in the presence of a preservative such as sodium benzoate or other benzoic acid or salicylic acid salts, and at low or atmospheric temperature. Pepsin may be replaced by panoreatin in alkaline solution,
Patent GB-747299-A (GB)
Title: Improvements in or relating to fluid pressure actuators and sealing assemblies therefor
IPC: F16D65/28
Filed: 1954-03-30
Abstract: 747,299 Stuffing-box substitutes. BENDIX - WESTINGHOUSE AUTOMOTIVE AIR BRAKE CO. March 30, 1954 [April 27, 1953], No. 9313/54. Class 122(5) In a fluid pressure actuator, such as used in compressed air braking systems, the actuating rod 38, which is subject to both axial and lateral movements, is sealed where it passes through an opening 42 in the actuator casing wall 44 by an annular sealing disc 52 housed in a cup-shaped member or holder 70 and pressed axially into contact with the outer face 56 of the wall by a resilient element 80 acting between the inner face 82 of the wall and a sleeve 58 which is slidably mounted on the rod and has a lip 64 engaging the holder 70. The resilient element 80 is located on the sleeve 58 by a circlip 88 and comprises a bulb portion 84 having a plurality of spring fingers 86 extending radially outward therefrom to engage face 82. The sealing disc is of fibrous or rubber material and the contacting surfaces 78, 66 of the holder 70 and lip 64 respectively are complementary spherical surfaces formed on a radius centred on the axis of the rod 38. A rubber boot 92 having a hub portion 94 gripping the rod and an end surface 96 in contact with the wall may be provided to exclude grit from the seal when the rod is not being operated.
Patent GB-1442289-A (GB)
Title: Process for the hydroxylation of phenol
IPC: C07C67/00
Filed: 1975-03-06
Abstract: 1442289 Process for the hydroxylation of phenol BAYER AG 6 March 1975 [6 March 1974] 9334/75 Heading C2C The invention comprises a process for hydroxylating phenol in the nucleus, wherein phenol is reacted at the start of the reaction with substantially anhydrous hydrogen peroxide, wherein the reaction is carried out in the presence of an acid having a pK A  value of #4À76 at 25‹ C. and wherein the resulting phenol hydroxylated in the nucleus is recovered. The acid is preferably one which is inert under the reaction conditions. The hydrogen peroxide may be dissolved in an anhydrous solvent. The reaction is preferably carried out at from 20‹ to 150‹ C. and may be carried out in the presence of a stabilizer.
Patent GB-459211-A (GB)
Title: Improvements in or relating to wrist watches
IPC: G04B37/04
Filed: 1935-03-26
Abstract: 459,211. Wrist watches. CHAUVOT, R. A., 7, Rue Bachaumont, Paris. March 26, 1935, No. 9430. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 30, 1935]. [Class 139] Watch cases.-A wrist-watch includes a case 1 carrying the movement, a support 5 for said case, locking means for removably securing the case in the support in either of two opposed positions (dial shown or hidden) and a " sliding link member " between case and support to limit the amount of separation between them whilst permitting any other relative displacement between case and support. The case 1 carrying the movement has lugs 6 and 7 which coact with slot 5<1> and hole 13 in the upright limbs of the U-shaped supporting frame 5 which has cross-bars for attachment of a wrist bracelet 16. Lug 7 has attached to it a chain 8 ending in a ball 9 larger than the hole 13 and lug 6 has a hemispherical head which reaches into a hole in a plate 10 which is held in place by a blade spring 11 coacting with rib 12 on plate 10. If the case 1 is pulled upwards, Fig. 1, about pivot 7 so that lug 6 is forced out of plate 10 against spring 11, the case may be withdrawn until ball 9 reaches the part 5 and then rotated to show the dial. For permanent removal, ball 9 may be removable from chain 8 or the latter may be removable from the case. Part 8 may be a chain or a leather, silk, or elephant hair cord. The case may have ribs 2 and 4.
Patent GB-250615-A (GB)
Title: A fire-extinguishing device for tanks and other containers for storing inflammable liquids
IPC: A62C3/06
Filed: 1926-04-10
Abstract: 250,615. Excelsior Feurl÷schgerõte Akt.-Ges., (Assignees of Neumann, F.). April 11, 1925, [Convention date]. Chemicals; extincteurs; fire-extinguishing in tanks by gases or foam; sprinklers, automatic. - A device for extinguishing fires in tanks or containers for inflammable liquids comprises a hollow float which covers most cf the surface of the liquid and has an overhanging cover defining a roofed-in annular chamber around the float, and is charged with or has means for producing an extinguishing agent. In the form shown in Fig. 2, the float b with overhanging cover c has compartments e around its edge containing glass vessels f of bromine or carbontetrachloride, the nozzles h of which are inclined to direct a jet of liquid against the wall of the tank a, whence it vaporizes into the annular chamber g. The vessels f are broken when a fire occurs by spring plungers released by fuse cords. The compartments e may be filled with the inflammable liquid to prevent freezing of the extinguishing liquid. In a modification, extinguishing liquid is expelled from a chamber centrally arranged in the float by pressure from a gas-generating cartridge operated by spring strikers controlled by fuse cords. In another modification, Fig. 6, a receptacle x in the float contains a liquid component of a foam mixture and delivers to a vessel y containing dry foam ingredients by way of a pipe 4 controlled by a cock 5 operated by a lever 6, spring, and fuse cords. From the vessel y the foam produced passes to a distributing chamber 2 and thence to the annular chamber g by pipes 3. The cover c of the float is hinged and held down by a screw 10. In another modification, liquid foam ingredients are contained in separate compartments in the float and pass to a mixing chamber when metal discs are pierced by a striker operated when a gas cartridge is fired by fuse cords. In each construction the float b is preferably air-tight and may be evacuated.
Patent GB-230299-A (GB)
Title: Improvements in rollers, drums and the like
IPC: B66D1/30
Filed: 1924-04-15
Abstract: 230,299. Gilchrist, G. A., and Stoker, N. April 15, 1924. Securing rollers on shafts.-A roller 1 suitable for guiding haulage cables is cast with a boss 3 at each end, each boss having interiorly of the roller a double eccentric hole 5 engaged by a key or cam projection 6 upon the roller spindle 9. The outer half of each boss has a round hole 4 adapted to fit upon the body of the spindle 9, but at least one of these outer half bosses is cut away to form a passage 8 through which the keys &c. 6 may be passed in assembling the parts.
Patent GB-1123034-A (GB)
Title: Light metal pistons
IPC: F02F3/04
Filed: 1967-03-01
Abstract: 1,123,034. Pistons. MAHLE K.G. 1 March, 1967 [18 March 1966]. No. 9607/67. Addition to 1,064,080. Heading F2T. In a light metal piston the skirt 40 is provided at its end adjacent the head with embedded expansion-regulating inserts 52 of ring- segment form and nearer its open end with circumferentially spaced expansion-regulating sleeve inserts 53 exposed on their inner peripheral faces and integrally connected by webs 54 with ring-segment parts 55 which overlap and abut the inner peripheral faces of the inserts 52. The parts 55 and inserts 52 are connected to one another by spot welding. The inserts 52 have ends anchored in the piston pin boss supports and flanges 56 terminating in the outer surface of the piston.
Patent GB-311058-A (GB)
Title: Improved construction of feed water heater for water tube boilers
IPC: F22D1/08
Filed: 1928-03-30
Abstract: 311,058. Green &. Son, Ltd., E., and Tansley, G. E. March 30, 1928. Feedwater, heating.-A feed-heater for water-tube e boilers comprises two drums A, B one above the other in a flue-way, connected by steel tubes C carrying rings or corrugated envelopes s E. Baffles F cause the heating gases to take a circuitous path. Specification 269,560 is referred to.
Patent GB-102231-A (GB)
Title: Boundary Line Markers for Tennis Courts and the like, or for Marking out Ground for other purposes.
Inventor: LORD FREDERICK WAIT
IPC: A63C19/06
Filed: 1916-07-10
Abstract: 102,231. Lord, F. W. July 10, 1916. Setting-out ground.--A boundary-line marker for tennis courts or other purposes comprises a channel-shaped strip of tin, sheet iron, or other flexible material, Fig. 2, formed with a number of teeth. Some of the teeth 3<1> may have their free ends bent. When driven into the ground, the teeth, on meeting obstructions such as stones, are deflected independently of one another and afford a firmer connexion with the ground. The marker may be rolled up as shown in Fig. 7. Square corners may be turned by removing some of the teeth and bending the marker by means of a forked tool, Fig. 8, having triangular prongs. The upper surface 1, Fig. 2, of the marker may be roughened by applying. a coating of paint and sand; or angular cross-cuttings may be produced on the surface by the dies used in the manufacture of the markers. In Fig. 15, the surface roughening is shown in the form of intersecting circular arcs.
Patent GB-435809-A (GB)
Title: An improved process for the splitting and hydrogenation of hydrocarbon oils
IPC: C10G47/02
Filed: 1934-03-28
Abstract: Hydrocarbon oils are cracked and/or hydrogenated by passing them together with hydrogen and oxygen or oxygen-containing gas <PICT:0435809/III/1> mixtures over catalysts the reaction proceeding exothermically and without external heating due to the reaction of the hydrogen with the oxygen in the presence of catalysts promoting oxidation, e.g. vanadium, tungsten, molybdenum, platinum, palladium, &c. Coke oven gas from a holder g mixed with air in a vessel m is pumped to a reaction vessel a into which it atomizes the oils from a tank o through nozzles b.  The materials are cracked and/or hydrogenated in passage through catalysts c maintained at reaction temperature by catalytic combustion of the hydrogen and the products are cooled in a cooler d heavy constituents being condensed and removed to a tank t<1>.  The vapours are passed through a high tension apparatus e and a scrubber w from which the condensate is removed to a tank t and partly recirculated as scrubbing agent while the remainder is passed to a separator q in which low boiling constituents are separated by distillation with steam and condensed in a cooler k the condensate being collected in a separator S, where the final product is separated from the water and led to a receiver t<111>.100 parts coke oven gas containing 50 per cent hydrogen are mixed with 120 parts air and the vapours obtained from a heavy paraffin oil and the mixture is led over shavings of electrolytic copper.  28 per cent of the paraffin is converted into light oil which is absorbed in activated carbon.  Specification 348,252 is referred to.
Patent GB-232771-A (GB)
Title: Improvements relating to fittings for telephone head pieces
IPC: H04M1/15
Filed: 1924-04-17
Abstract: 232,771. Elphick, P. April 17, 1924. Reels and reel carriages. -A drum d for winding up the leads of a telephone head set is contained in a case a, adapted to be fixed to a wall and attached to the cover c which is provided with a handle e. for rotating it and the drum. The telephone leads are attached to spring fingers i, j which press on continuous rings l, m. The drum may be contained within a cabinet and furnished with a handle or plate outside the cabinet by which it may be rotated.